268628408 has 16 divisors (see below), whose sum is σ = 525577680. Its totient is φ = 128474368.

The previous prime is 268628383. The next prime is 268628419. The reversal of 268628408 is 804826862.

It is a super-2 number, since 2×268628408² = 144322443169228928, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 729785 + ... + 730152.

It is an arithmetic number, because the mean of its divisors is an integer number (32848605).

Almost surely, 2^268628408 is an apocalyptic number.

It is an amenable number.

268628408 is a deficient number, since it is larger than the sum of its proper divisors (256949272).

268628408 is a wasteful number, since it uses less digits than its factorization.

268628408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1459966 (or 1459962 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 44.

The square root of 268628408 is about 16389.8873699608. The cubic root of 268628408 is about 645.2341020707.

The spelling of 268628408 in words is "two hundred sixty-eight million, six hundred twenty-eight thousand, four hundred eight".